LED filament bulb



FIG. 1 is a perspective view of an LED filament bulb showing my new design;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is a right side view of FIG. 1;

FIG. 6 is a top view of FIG. 1; and,

FIG. 7 is a bottom view of FIG. 1.

The broken lines in the figures form no part of the claimed design. 

CLAIM The ornamental design for an LED filament bulb, as shown and described. 